<html>
<head><title>Hello, World in JavaScript</title></head>
<body>
<p id="greeting"></p>
<script type="text/javascript">
    var isIE = document.attachEvent;
    var addListener = isIE
            ? function (e, t, fn) {
        e.attachEvent('on' + t, fn);
    }
            : function (e, t, fn) {
        e.addEventListener(t, fn, false);
    };

    addListener(window, 'load', function () {
        var greeting = document.getElementById('greeting');
        if (isIE) {
            greeting.innerText = 'Hello, World';
        } else {
            greeting.textContent = 'Hello, World';
        }
    });
</script>
</body>
</html>